A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6135-01-217-8810
NSN 5930-01-437-8823
NSN 5990-01-193-0487
NSN 5975-01-014-7231
NSN 5895-00-851-9053
NSN 6145-01-073-6641
NSN 5999-01-579-3866
NSN 6135-01-528-6896
NSN 6240-01-374-7116
NSN 5999-00-488-6245
NSN 5895-00-232-5355
NSN 6650-01-534-5787